This comic issue is a part of the massive Knightfall crossover event. Knightfall consisted of three parts, Knightfall, Knightquest, and KnightsEnd. The trilogy involved Batman's back being broken by Bane, the debut and subsequent descent into madness of Bruce Wayne's successor Batman Jean-Paul Valley, and Bruce Wayne's recovery and reclamation of his former title, combatting Valley himself. This template will categorize articles that include it into the "Knightfall Crossover" category.